Door-check



(No Model.)

J. J. LAMB.

DOOR CHECK.

NO. 298.989. Patented May 20, 1884.

JOHN J. LAMB, OF WATERLOO, IOWA.

DOOR CHECK.

SPECIFICATION forming part of Letters Patent No. 298,989, dated May 20, 1884.

7 Application filed February 23, 1884. (No model.)

T0 at whom it may concern.-

Be it known that I, JOHN J. LAMB, a citizen of the United States, residing at Water. 100, in the county of Black Hawk, State of Iowa, have invented certain new and useful Improvements in Door-Catches; and I do hereby declare the following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 represents a section of the front of a barn and door with my improvements attached. Fig. 2 represents a perspective view of the catch detached. Fig. 3 is a detail of the lower part of the casting and pivoted dog.

Similar letters of reference indicate corre sponding parts.

In barns, warehouses, and such structures, where heavy doors are used, it is highly desirable, and, in fact, absolutely necessary, that at certain periods the doors should be thrown open and securely held in position; and my invention consists in the novel arrangement and combination of parts, as will be hereinafter more fully set forth and claimed.

To enable others skilled in the art to make and use my invention, I will proceed to describe the exact manner in which I have carried it out.

In the said drawings, A represents the front of a barn or similar structure, and A the door for the same, which is mounted or hung in the usual manner.

Secured to the barn by bolts or screws, and at a point adjacent to the edge of the door when the door is thrown open to its greatest extent, is a catch, 13, which consists of a casting, 0, having flanges c c, by which it is secured to the barn. This casting projects outward from the frame, and has its outer end inclined or set at an angle, as shown at a, and has a connecting-piece, O, for a purpose hereinafter set forth. The casting O is also formed with an elongated slot, D, which extends nearly the whole length of the casting; and in the inner end of this slot is formed an incline or angular shoulder, (1, against which abuts'one end of a pivoted dog when the door has been thrown open and is being held by the catch, as shown in Fig. 1.

XVithin the slot D, formed in the casting O, is pivotally secured at e a catch or dog, E, constructed substantially as shown in the drawings, and having a straight face, 0, adapted to lie parallel and flush with the sides a of the casting when the door is open, while the face 6 of this dog is formed on an angle casting O, and thence backward through the I slot D, and is formed with an enlarged head, 6 having a curved portion, h.

If desirable, a cord or wire, f, is passed through an opening, 9, formed in a catch or dog, which materially aids in releasing the door or gate.

The operation of my device is as follows: The catch having been properly secured to the structure, the door is swung open until its edge strikes against the curved portion h of the enlarged head 6, which causes the outer portion of the pivoted dog to move forward. At the same time the inner end is forced in an opposite direction, as shown in dotted lines in Fig. 1. The outer portion is moved sufficiently far as to permit the edge of the door to escape the head, when it strikes the inner end of the pivoted dog and forces it forward until its inclined face strikes against the shoulder d. From this construction, it is readily seen that as the enlarged head 6 is again thrown backward it overlaps the end of the door and securely holds it between the frame of the barn and the outer end of the pivoted dog.

It is obvious that doors of different sizes can be used with this catch; and when it becomes necessary to close the door again, by simply pulling the cord or wire f, the short or inner end of the dog is thrown out, and acts as a wedge in starting the door.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a catch for doors, and in combination with the casting 0, provided with an elongated slot, and a shoulder, d, at the base of said slot, the pivoted dog E, having a straight face, 6, adapted to lie flush with the casting 0, and provided with an inclined face, e, which abuts against the shoulder d, and an enlarged head, a, all arranged to operate substantially as and for the purpose herein set forth.

JOHN J. LAMB. WVitnesses:

J. SOHIEL,

J. N. WALKER. 

